DMPQ- – Write a note on the Evolution of National Grid.

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Grid management on regional basis started in sixties.

  • Initially, State grids were inter-connected to form regional grid and India was demarcated into 5 regions namely Northern, Eastern, Western, North Eastern and Southern region.
  • In October 1991 North Eastern and Eastern grids were connected.
  • In March 2003 WR and ER-NER
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were interconnected .
  • August 2006 North and East grids were interconnected thereby 4 regional grids Northern, Eastern, Western and North Eastern grids are synchronously connected forming central grid operating at one frequency.
  • On 31st December 2013, Southern Region was connected to Central Grid in Synchronous mode with the commissioning of 765kV Raichur-Solapur Transmission line thereby achieving ‘ONE NATION’-‘ONE GRID’-‘ONE FREQUENCY’.

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